An infinitely sharp zone of solute is placed at the center of a column at time t 0
Chapter 22, Problem 22-37(choose chapter or problem)
An infinitely sharp zone of solute is placed at the center of a column at time t 0. After diffusion for time t1, the standard deviation of the Gaussian band is 1.0 mm. After 20 min more, at time t2, the standard deviation is 2.0 mm. What will be the width after another 20 min, at time t3?
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